US601443A - Machine for grinding cutlery - Google Patents

Machine for grinding cutlery Download PDF

Info

Publication number
US601443A
US601443A US601443DA US601443A US 601443 A US601443 A US 601443A US 601443D A US601443D A US 601443DA US 601443 A US601443 A US 601443A
Authority
US
United States
Prior art keywords
machine
carriage
shaft
work
grinding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US601443A publication Critical patent/US601443A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/16Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs

Definitions

  • My invention relates to edge-tool-grinding machinery, and has especial reference to machines for grinding articles of cutlery, such as knife-blades, razors, 85o.; and it has for its object to materially increase the working capacity of such machines and at the same time improve the character of the Work done thereby.
  • Figurel is a plan View of a grindingmachine embodying my invention.
  • Fig. 2 is a front elevation thereof.
  • Fig. 3 is a rear elevation'thereof.
  • Fig. 4 is an end View with a portion of the bed cut away at the line of Fig. 3.
  • Fig. 5 is a plan view, drawn to a larger scale, of the mechanism located at one end of the machine.
  • Fig. 6 is a partial crosssection thereof, taken at line 'y y of Fig. 5.
  • Fig. 7 is a cross-section taken at line z z of Fig. 5.
  • Fig. 2 is a front elevation thereof.
  • Fig. 3 is a rear elevation'thereof.
  • Fig. 4 is an end View with a portion of the bed cut away at the line of Fig. 3.
  • Fig. 5 is a plan view, drawn to a larger scale, of the mechanism located at one end of the machine.
  • Fig. 6 is a partial crosssection thereof, taken
  • Fig. 8 is a detail View of the means for adjusting the work-supporting tables toward and away from the abrading-wheels.
  • Fig. 9 is a vertical section of the bearings for the wheel-chucks and their shaft.
  • Fig. 10 is a detail View of the eccentric-engaging arm which vibrates the work being ground.
  • Fig. 11 is a partial longitudinal section thereof, taken on line w w of Fig. 12.
  • Fig. l2 is a plan view of said arm.
  • Fig. 13 is a longitudinal section of one of the work-clamping devices.
  • Fig. 14. shows the cam-hub thereof detached.
  • Fig. 15 is a partial View of the clamp-operating lever.
  • Fig. 9 is a vertical section of the bearings for the wheel-chucks and their shaft.
  • Fig. 10 is a detail View of the eccentric-engaging arm which vibrates the work being ground.
  • Fig. 11 is a partial longitudinal section thereof, taken on line w w of
  • Fig. 16 is a partial longitudinal section of the reversing-lever for one of the work-carriages and the means for locking it in one of its positions.
  • Fig. 17 is a vertical section taken at line o o of Fig. 16.
  • Fig. 1S is a longitudinal section of a' portion of the driving-shaft for the work-carriages, showing the reversing-gears and their sliding sleeve.
  • Fig. 19 is a face view of one of the die-holders for the work.
  • Fig. 2O is a View in perspective of one 'of the dies.
  • Fig. 21 is a horizontal section showing the basev of one of the Work-carriages, the.
  • Figs. 22 and 23 are respectively a face view and a plan view of a portion of said way, having inserted therein an independent plate containing the forming or shaping recess.
  • Figs. 24, 25, and 26 are respectively a face View, a plan, and an end view of still another modification in which the shaping-recess is located in an adjustable plate mounted on the way.
  • the numeral 1 designates-the supportingbase of the machine, which will be provided with suitable legs or feet, as shown, and has its interior formed into a tank or reservoir for holding water, as is customary in grinding machinery of this character.
  • Said base supports the bed 2 of the machine, which bed at the two ends of the machine is enlarged in area to form two shallow pans or receptacles for receiving the water fed to lthe abradingwheels, as shown in Figs. 1, 2, and 3, and said pans communicatewith the reservoir in the base by passages 3 (see Fig. 9) to permit the water to return to the latter after being used in a well-known manner.
  • the bed 2 supports the standards 4, in which are located the bearings for the shaft 5, which carries the chucks 6 for the annular abrading-wheels 7.
  • the shaft 5 passes through said hubs, and between the latter it carries the band-pulley 10, by which motion is transmitted to the machine by belt from a power-shaft,said pulley having formed integral therewith the smaller pulley 12 to receive the belt by which the motion of shaft 5 is transmitted to the driving-shaft for the work-carriages,as will be presently described.
  • -Said mechanisms are exact duplicates of each other, and the variousparts thereof are designated by thesame numerals; but to avoidprof liXity I will describe the construction and op.- eration of the mechanism at one end of the machine merely,it being understood that such description applies equally well to either'of said duplicate mechanisms.
  • a dovetail way 15 (see ⁇ Fig. 4,) extending ini ⁇ a direction parallel with .the axis of shaft 5 and perpendicular to. the face of the abradi'ngwhee1lupon which way is mounted a. table 16which supports the Work-.carriage and its operating mechanism. Screw-boltsl', pass,- ing; through the overlapping edge of said table againstian interposed gib, (see Figs. 4and 6,).
  • Said shaft 22 carries at, one end the spur-gear 24, and preferably hasits oppositev end reduced and iitted to receive aV w,rench as shown in.
  • Figs; 5 and 'Zto permit they shaftto be operated manually-in adjlistin g the startingpoint of thea traverse of the carriage.
  • Said gear 24 on ⁇ the shaft mesheswith a spur-gear 25,carriedI by a plate 26, which is dovetailedV into an angle-bar 2.7, boltedto theA under side of theibed, (see-,Fig 7,). screw-bolts 28 passing through slots in shown.
  • a bevel-gear 29 which is adapted to be engaged alternately by two oppositely-faced bevel-gears 30 31, carl ried by a sleeve 32, which has a splined con- ⁇ ,”nection with the driving-shaft 33, (see Fig.
  • Said shaft 33 is supported in suitable bearings upon the plates 26. at the-rear side of the machine and carriesy midway between itsv ends the spurgear 34, (see Fig. 3,) which ⁇ gear meshes with a smaller gear 35., mounted upon a short standard 36, said gear having connected thereto a band-pulley 3'Z, to which motion is transmitted by a band 38, passing about the pulley12y on the wheel-shaft 5. Provision is thus made for imparting motion to the shaft 33, which constantly maintains a uniform relation to that of the wheel-shaft.
  • the gear 31 on sleeve 32 is provided with an annularlygrooved hub which receives the forked end of a reversing-lever 39, pivoted upon a vertical stud fon the table 16, the long arm of which extends. to the front side of the machine and terminates in a suitablehandle, as (See Figs. 1, 5, and 6.)
  • a suitablehandle as (See Figs. 1, 5, and 6.)
  • coil-sprin g 46 surrounding said pin Within the saidv lever toward the left or inj a direction to disengage the gear 3l from gear 29 and; move gear 30 into engagement withthe latter.
  • Pivotally mounted upon the table is a short lever 48, the short arm of which lies in the pathof tappet 41 on the carriage as the latter nears the end of its movement toward the front side of the machine, and the long arm of which engages the side of lever 89, (see Fig. 5,) a light spring 49 keeping said lever in such position.
  • Said lever 48 is of such length that its action upon lever 39 will be sufficient to disengage gear 30 from gear 29, but will not move gear 31 into engagement with the latter, the carriage being thus brought to a rest to permit the insertion of a new blade in the work-holder, after which it is again set in motion by manually shifting the lever to throw gear 31 into engagement with gear 29.
  • the parts beingin the position shown in Fig. 5,
  • the work-carriage is provided at its edge adjacent to the abrading-wheel with the two bearings 50, which receive the trunnions 51, projecting from the opposite ends of the dieholder 52, (shown detached in Fig. 19,) whereby said die-holder is rendered free to rock upon said tru unions, and the means provided for imparting a positive rocking movement thereto are preferably as follows:
  • a shaft 53, supported in bearings 54 on table 16, (see-Fig. 5,) carries at one end a spur-gear 55, which meshes with gear 24, and upon said shaft is mounted an eccentric 56, (see Fig.
  • the die-holder 52 is provided at one end with a laterally-projecting arm composed of the two members 57 58, (see Figs. 10, 11, and 12,) which are connected togethemby the hinge-joint 59.
  • the member 58 terminates at its outer end in a fork which embraces the eccentric 56, and two cap-pieces 59, applied to the sides of said fork, form aV housing for said eccentric and compel it to move longitudinally of. shaft 53 with the work-carriage.
  • the member 57 of said arm has its outer end provided with teeth formed on the arc of a circle of which the hinge-joint 59 is the center, and the member 58 is provided with a shoulder facing said teeth, in which is located a segment of a tapped hole to receive the adjusting-screw 60, which engages both the thread of said hole and the teeth on the member 57, whereby an adjustment of one member upon the other can be effected by turning said screw to vary the extent of the rocking movement imparted to the die-holder by the eccentric.
  • a set-screw 61 passing through an arc slot in the ⁇ member 57 into the member 58, serves to securely fasten said members together in any of their adj usted positions.
  • Such rocking movement of the die-holder is for the purpose of securing the slight convexity transversely of the blade with which knife-blades are finished, and the described means for adjusting the amount of such movement adapts the machine for producing the proper convexity on blades of varying widths as well as for varying the degree of convexity on blades of the same width.
  • the die-holder 52 In its side adjacent to the abrading-wheel the die-holder 52 is provided with a recess to receive the die-plate 62, (see Figs. 19 and 20,) which is secured thereto by screws, as shown, or in any convenient manner. has its acting face provided with a shoulder or rest 63 for supporting the blade and conforming substantially to the shape of the edge of the latter,as shown in Fig.
  • the preferred means for clamping the blade upon said die-plate are as follows: At its frontend the die-holder52 is provided with the laterally-projecting hub 65, through which extends a squared hole to receive the stem 66 of a clamping-jaw 67, the acting face of which opposes the face of the die-plate and is slightly tapered to correspond with the taper of a knife-blade at the butt-end of the latter, at which point said jaw engages a blade placed on said plate.
  • the stem 66 is made square for a short distance from the jaw, whereby it is prevented from turning within the hole in the die-holder, and is made round from such point to its outer end, where it is threaded to receive a nut 68 and a lock-nut 69.
  • a collar 70 on said stem is formed with a shoulder end of said collar 70 forms a scroll-cam, (see Fig. 14,) and a lever 73 has its hub 74, which embraces the stem between said collar and the nut 68, provided with a similar cam for- Said die-plate IOO IIO
  • the collar 70 is provided with Spanner-holes, as shown, and by loosening screw 71 and imparting a partial rotation to said collar any wear between the two cam-surfaces can be taken up and the jaw can bev caused to securely hold blades of varying thickness upon the die-plate.
  • the position occupied by a knife-blade when clamped upon the die-plate is indicated by broken lines in Figs. 7 and 19.
  • I also provide means for automatically causing the abrading-wheel to follow the beveled surface at the point of the blade to the extreme point of the latter, which are as follows:
  • the way 20, upon which the workcarriage 2l moves is provided in its outer side and near its front end with a shallow recess 75, and that the carriage makes its contact with the way at that side by means of two screw-pins 76, which are locked in any posisition of adjustment by meansof lock-nuts 77.
  • the carriage In its opposite side the carriage is provided with a series of holes in which are located coil-springs 7 8, surrounding pins 79, screwed into said holes, which springs bear against the adjacent side of the way 20, thereby drawing the ends of the pins 76 against the ⁇ opposite'side of the way with sufficient forceto cause one of said pins, when it reaches said recess 'Z5 as the. carriage approaches the end of its forward movement, to enter said recess and thereby impart to the carriage a slight tilting movement horizontally, such movement being allowed by the swivel connection of the nut 23with the carriage, as hereinbefore mentioned.
  • the recess 75 is so located and is of such conformation that such tilting movement of the carriage will cause the beveled surface at the point of the knifeblade to bear against the face of the abrading-wheel tothe eXtreme point of the blade.
  • the recess 75 instead of being made in the wall of the way itself, is madein a thin bar of steel S3,
  • a rotary pump 7 9 (see Figs. 3 and 4) is mounted at the rear side of the machine for withdrawing the water from the reservoir in the base and feeding it to the abrading-wheels through suitably-disposed pipes (not shown) in a well-known manner, said pump being driven by a belt 80, connecting a pulley 8l on the pump-shaft with a pulley 82 on shaft 33.
  • the mechanism above described for holding and presenting the work to the abrading-wheel at one end of the machine is duplicated at the opposite end in connection with the opposite wheel,thereby enabling two blades to be Operated upon simultaneously, and the operation of the machine is as follows:
  • the work-carriages 2l being at the end of their traverse toward the front side of the machine, two knife-blades are applied to the die-plates thereon and clamped thereon by turning the levers 73.
  • the operator grasps the two levers 39 and moves them sufficiently to throw the gears 31 into engagement with gear 29, said levers being retained in such position bythe entrance of the pins 44 intothe recess in their under side.
  • the carriages are thus caused to move toward the rear side of the machine, carrying the knife-blades transversely across the faces of the annular abrading-wheels, while at the same time the rocking motion imparted to the die-holders by the eccentrics 56 secure the desired convexity transversely to the blades.
  • Such action continues until the tappets 42 on the. carriages engage the levers 43. and by rocking the latterwithdraw the pins 44 from the reversing-levers, whereupon the springs 47 actuate said levers to throw the gears 30 into engagement with gears 29 and the carriages begin their return movement.
  • a grinding-machine the combination with an annular abrading-wheel, of a way eX- tending parallel with the acting face of said wheel'and having in one side thereof, near one of its ends, adepression or recess, a workcarriage mounted upon said way and having means for clamping thereon the work to be ground, said carriage being provided with inwardly-projecting engaging means near each end which bear against the recessed side of said way and with a spring or springs bearing against the opposite side of said way, and means, as a screwshaft, for moving said carriage upon said way, substantially as set forth.
  • annular grindin g-wheel a work-carriage movable in a plane parallel with the acting face of said wheel, a work-holder pivotally supported upon said carriage, a screw-shaft operatively connected with said carriage for imparting a back-andforth movement thereto, means substantially as described for imparting a rocking movement to said work-holder during the traverse of said carriage, and means for causing a slight tilting movement to the carriage in a horizontal plane as it approaches the end of its movement in one direction, combined and operating substantially as and for the purpose set forth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Description

(No Model.) 11 Sheets-Sheet 1.
W. C. LAMBERT.
MACHINE POR GRINDING GUTLBRY.
. ,Kim/M- (No Model.) Ily Sheets-Sheet 2 W. C. LAMBERT. MACHINE POR GRINDING UUTLERY.
. No. 601,443. 'Patented Mar. 29,1898.
11 Sheets-Sheet 3,
No ModeM W. C. LAMBERT. MACHINE PoR @BINDING GUTLBIIY.
No. 601.443.. Patented Mar. 29, 1898.
(No Model.) 1i sheets-sheet 4.
W. LAMBERT.. MACHINE FR GRINDING CUTLBRY.
No. 601,443. Patented Mar. 29,1898.'
(No Model.) 1l Sheets-Sheet 5.
W. G. LAMBERT.
MACHINE FOR GRINDING CUTLERY. No. 601,443. Patented Mar. 29,1898.
ff/zeau@ I' A In ye/@Zo K gli W (No Model.)
1l Sheets-Sheet .6. W. C. LAMBERT. MACHINE POR GRINDING GUTLBRY.
.M .W 0.@ M+ 9 W 2 1 M L 0W MPM m w @d P 7.4 rv A4-mm .l s wmw ,1f 3.. www M J m. mw@ Wr? (No Model.)
11 Sheets-Shevet 7 L R E L .w Mhu EG N BM Mm A Lm Um .UL E WN I H C A M Patented Mar. 29, 1898.
m 1 n *u l M w -n H W ri, M K N. WH 2 o\ l lMWL... \Hl .l H `Q I II l Jiiye/z for@ Wm fzeJJeJ 11 Sheets-Sheet 8. W,.G. LAMBERT.
MACHINE POR GRINDING GUTLBRY.
Patented Mar. 29,1898.
(No Modelf) (No Model.) 11 sheetssheet 9. r
W. C. LAMBERT. MACHINE PQR GRINDING GUTLERY.,
N0. 601,443. Patented Mar. 29,1898.
Zic/.17
./(9 l l I In U 'qmlmuh f'gzfr 1 L R E T.. T
Dru-G AMAN CLM Ihr.
WE N T1 H HU A M (No Model.)
No. 601,443. Patented Mar. 29,1898.
INI/@nov @./f. my
nu w pm 1% g 11 Sheets-Sheet 11.
(No Model.)
WQ-0. LAMBERT'. MACHINE FOR GRINDING GUTLERY.
Patented Mar. 29,1898.
Y fu.
lIII
UNITED STATES PATENT- Fries.
VILBUR C. LAMBERT, 0F NEW HAVEN, CONNECTICUT.
MACHINE FOR GRINDING CUTLERY.
SPECIFICATION forming part of Letters Patent No. 601,443, dated March 29, 1898.
Application iilecl February 8, 1896. Serial No. 578,470. (No model.)
To a/ZZ whom it may concern,.-
Be it known that I, WILBUR C. LAMBERT, a citizen of the United States, residing at New Haven, county of New Haven, and State of Connecticut, have invented a new and useful Improvement in Machines for Grinding Cutlery, of which the following is a specification, reference being had to the accompanying drawings, forming part thereof.
My invention relates to edge-tool-grinding machinery, and has especial reference to machines for grinding articles of cutlery, such as knife-blades, razors, 85o.; and it has for its object to materially increase the working capacity of such machines and at the same time improve the character of the Work done thereby.
To this end my invention consists in the grinding-machine constructed and operating as hereinafter fully described, and particularly pointed out in the claims.
Referring to the drawings, in which like numerals designate like parts in the several views, Figurel is a plan View of a grindingmachine embodying my invention. Fig. 2 is a front elevation thereof. Fig. 3 is a rear elevation'thereof. Fig. 4 is an end View with a portion of the bed cut away at the line of Fig. 3. Fig. 5 is a plan view, drawn to a larger scale, of the mechanism located at one end of the machine. Fig. 6 is a partial crosssection thereof, taken at line 'y y of Fig. 5. Fig. 7 is a cross-section taken at line z z of Fig. 5. Fig. 8 is a detail View of the means for adjusting the work-supporting tables toward and away from the abrading-wheels. Fig. 9 is a vertical section of the bearings for the wheel-chucks and their shaft. Fig. 10 is a detail View of the eccentric-engaging arm which vibrates the work being ground. Fig. 11 is a partial longitudinal section thereof, taken on line w w of Fig. 12. Fig. l2 is a plan view of said arm. Fig. 13 is a longitudinal section of one of the work-clamping devices. Fig. 14. shows the cam-hub thereof detached. Fig. 15 is a partial View of the clamp-operating lever. Fig. 16 is a partial longitudinal section of the reversing-lever for one of the work-carriages and the means for locking it in one of its positions. Fig. 17 is a vertical section taken at line o o of Fig. 16. Fig. 1S is a longitudinal section of a' portion of the driving-shaft for the work-carriages, showing the reversing-gears and their sliding sleeve. Fig. 19 is a face view of one of the die-holders for the work. Fig. 2O is a View in perspective of one 'of the dies. Fig. 21 is a horizontal section showing the basev of one of the Work-carriages, the. way upon which it moves, and the forming depression therein which causes the abrading-wheel to form the beveling-point of the blade. Figs. 22 and 23 are respectively a face view and a plan view of a portion of said way, having inserted therein an independent plate containing the forming or shaping recess. Figs. 24, 25, and 26 are respectively a face View, a plan, and an end view of still another modification in which the shaping-recess is located in an adjustable plate mounted on the way.
The numeral 1 designates-the supportingbase of the machine, which will be provided with suitable legs or feet, as shown, and has its interior formed into a tank or reservoir for holding water, as is customary in grinding machinery of this character. Said base supports the bed 2 of the machine, which bed at the two ends of the machine is enlarged in area to form two shallow pans or receptacles for receiving the water fed to lthe abradingwheels, as shown in Figs. 1, 2, and 3, and said pans communicatewith the reservoir in the base by passages 3 (see Fig. 9) to permit the water to return to the latter after being used in a well-known manner. At the center of the machine the bed 2 supports the standards 4, in which are located the bearings for the shaft 5, which carries the chucks 6 for the annular abrading-wheels 7. I prefer to form the bearings for said shaft 5 as shown in Fig. 9that is to say, by providing two hubs 8, which are seated in the standards 4 and are provided internally with suitable antifriction-linings, as shown, Babbitt metal being preferably used, and are provided at their adjacent ends with similar annular bearing-surfaces 9. The shaft 5 passes through said hubs, and between the latter it carries the band-pulley 10, by which motion is transmitted to the machine by belt from a power-shaft,said pulley having formed integral therewith the smaller pulley 12 to receive the belt by which the motion of shaft 5 is transmitted to the driving-shaft for the work-carriages,as will be presently described.
IOO
fSO
One end of the hub of'said band-pulleys bears against the annularbearing-ring 9 off one of the hubs 8, and its opposite end is threaded to receive the nut 13 and lock-nut 14, which latter bears against the bearing-ring of the opposite hub 8. Provision is thus made for causing the end thrust of shaft in both directions to be taken by the bearing-rings on said hubs and for compensating for Wear of said rings bythe adjustment afforded by the two nuts 13 14, so that a perfectly true and steady movement of said shaft and the abradingwheels carried thereby is assured at all times.
The abrading-wheels 7, carried at the ends of the shaft 5, form right and left hand Wheels, and upon the bed of the machine at each end of the latter are located the carriages for the work and their operating mechanisms. -Said mechanisms are exact duplicates of each other, and the variousparts thereof are designated by thesame numerals; but to avoidprof liXity I will describe the construction and op.- eration of the mechanism at one end of the machine merely,it being understood that such description applies equally well to either'of said duplicate mechanisms. Y
Upnthe bed of the machinev is located a dovetail way 15, (see` Fig. 4,) extending ini` a direction parallel with .the axis of shaft 5 and perpendicular to. the face of the abradi'ngwhee1lupon which way is mounted a. table 16which supports the Work-.carriage and its operating mechanism. Screw-boltsl', pass,- ing; through the overlapping edge of said table againstian interposed gib, (see Figs. 4and 6,). serve to securely' fasten it against movement;- but by loosening said screwsathe table is-rendered freeto have a limited movement toward and awayfrom the face of the abrad'- ingwh.eel, which movement is imparted toit by means of a' screwfrod 18, revolubly supF ported atthe outer end of the bed,y said rod carryinga hand-wheel at its outer end and engaging at its inner end a nut 19 on the table, as shown in Figs. 4 andv 6, the way'1'5' beinglongitudiinally recessedto receive said rod and. nut., Upon said table 16 islocated a Way 2,0, extending at aright angle tothe. way
and. parallel with the face of the abrading-` wheel', upon which is mounted the work-carriage 21. Motion isimparted tosaid carriage by a screw-shaft 22, supported in bearings on table 16, said shaft engaging a nut 23, con.- nected to the carriage by a swivelrbolt (see Fig.- 8);toy permit a slight tilting movement of the carriage horizontally, for a purpose which will presently appear.4 Said shaft 22 carries at, one end the spur-gear 24, and preferably hasits oppositev end reduced and iitted to receive aV w,rench as shown in. Figs; 5 and 'Zto permit they shaftto be operated manually-in adjlistin g the startingpoint of thea traverse of the carriage. Said gear 24 on` the shaft mesheswith a spur-gear 25,carriedI by a plate 26, which is dovetailedV into an angle-bar 2.7, boltedto theA under side of theibed, (see-,Fig 7,). screw-bolts 28 passing through slots in shown.
said angle-bar into said plate, (see Fig. 2,) serving tosecurely hold the latter in position, while permitting it to have a limited adjustment longitudinally of the machine. The object of such provision for adjustment of plate 26` is to enable the gear 25` to be maintained in its proper working position relatively to gear 24 When the latter is shifted with the :adjustment of table 16, before mentioned..
Rigidly secured to said gear is a bevel-gear 29, which is adapted to be engaged alternately by two oppositely-faced bevel-gears 30 31, carl ried by a sleeve 32, which has a splined con- `,"nection with the driving-shaft 33, (see Fig.
18,) whereby longitudinal movement of said sleeve to throw either of its gears into mesh with gear 29 is permitted. Said shaft 33 is supported in suitable bearings upon the plates 26. at the-rear side of the machine and carriesy midway between itsv ends the spurgear 34, (see Fig. 3,) which` gear meshes with a smaller gear 35., mounted upon a short standard 36, said gear having connected thereto a band-pulley 3'Z, to which motion is transmitted by a band 38, passing about the pulley12y on the wheel-shaft 5. Provision is thus made for imparting motion to the shaft 33, which constantly maintains a uniform relation to that of the wheel-shaft. The gear 31 on sleeve 32 is provided with an annularlygrooved hub which receives the forked end of a reversing-lever 39, pivoted upon a vertical stud fon the table 16, the long arm of which extends. to the front side of the machine and terminates in a suitablehandle, as (See Figs. 1, 5, and 6.) By grasping said handle and swinging the lever the sleeve 32- can be moved to throw either of its gears intov action and thus reverse `the direction` of movement ofthe work-carriage; but I provide means whereby such reversal of movement-is secured automatically, which are as follows:
Tothe side of the Work-carriage are adjustably secured. two tappets 41 42 by means of screws passing through slots therein, (see Fig. 6,). and to the edge of table 16 is pivotally hung. an elbow-lever 43, (see Figs. 6, 16, and 17,).the long arm of which lever stands in the path of the tappet 42 as the Work-carriage nears the end of its movement in one direction. rlChe short arm of said lever enters a notch in avertically-disposedpin 44, mounted in a housing 45, secured to the table, and a IOO IIO
coil-sprin g 46, surrounding said pin Within the saidv lever toward the left or inj a direction to disengage the gear 3l from gear 29 and; move gear 30 into engagement withthe latter. Pivotally mounted upon the table is a short lever 48, the short arm of which lies in the pathof tappet 41 on the carriage as the latter nears the end of its movement toward the front side of the machine, and the long arm of which engages the side of lever 89, (see Fig. 5,) a light spring 49 keeping said lever in such position. Said lever 48 is of such length that its action upon lever 39 will be sufficient to disengage gear 30 from gear 29, but will not move gear 31 into engagement with the latter, the carriage being thus brought to a rest to permit the insertion of a new blade in the work-holder, after which it is again set in motion by manually shifting the lever to throw gear 31 into engagement with gear 29. The parts beingin the position shown in Fig. 5,
' the continued lnovement of the carriage tonally of the` latter.
ward the rear side of the machine will cause its tappet 42 to swing lever 43 and depress pin 44 to release the reversing-lever, whereupon the spring 47 throws the latter to its opposite position and reverses the movement of the carriage. )Vlien the carriage nears the end of its movement in the opposite direction, its tappet 41 engages lever 48 and gradually moves it and the reversing-lever until the carriage comes to a rest. The adjustability of the tappets renders it possible to vary the eX- tent of the traverse to correspond with work of different lengths.
The work-carriage is provided at its edge adjacent to the abrading-wheel with the two bearings 50, which receive the trunnions 51, projecting from the opposite ends of the dieholder 52, (shown detached in Fig. 19,) whereby said die-holder is rendered free to rock upon said tru unions, and the means provided for imparting a positive rocking movement thereto are preferably as follows: A shaft 53, supported in bearings 54 on table 16, (see-Fig. 5,) carries at one end a spur-gear 55, which meshes with gear 24, and upon said shaft is mounted an eccentric 56, (see Fig. 11,) which has a spline-and-groove connection with the shaft to permit movement thereof lon gitudi- The die-holder 52 is provided at one end with a laterally-projecting arm composed of the two members 57 58, (see Figs. 10, 11, and 12,) which are connected togethemby the hinge-joint 59. The member 58 terminates at its outer end in a fork which embraces the eccentric 56, and two cap-pieces 59, applied to the sides of said fork, form aV housing for said eccentric and compel it to move longitudinally of. shaft 53 with the work-carriage. The member 57 of said arm has its outer end provided with teeth formed on the arc of a circle of which the hinge-joint 59 is the center, and the member 58 is provided with a shoulder facing said teeth, in which is located a segment of a tapped hole to receive the adjusting-screw 60, which engages both the thread of said hole and the teeth on the member 57, whereby an adjustment of one member upon the other can be effected by turning said screw to vary the extent of the rocking movement imparted to the die-holder by the eccentric. A set-screw 61, passing through an arc slot in the` member 57 into the member 58, serves to securely fasten said members together in any of their adj usted positions. Such rocking movement of the die-holder is for the purpose of securing the slight convexity transversely of the blade with which knife-blades are finished, and the described means for adjusting the amount of such movement adapts the machine for producing the proper convexity on blades of varying widths as well as for varying the degree of convexity on blades of the same width.
In its side adjacent to the abrading-wheel the die-holder 52 is provided with a recess to receive the die-plate 62, (see Figs. 19 and 20,) which is secured thereto by screws, as shown, or in any convenient manner. has its acting face provided with a shoulder or rest 63 for supporting the blade and conforming substantially to the shape of the edge of the latter,as shown in Fig. 20,and is preferably provided with the vertical channels 64 in its wall above said rest, as shown, which obviate the necessityof reducing the entire face of said wall to a true plan e, and thereby lessen the cost of manufacture of the die-plate and also serve to permit a portion of the water fed to the wheel during the grinding operation to escape behind the blade and prevent the latter from being unduly heated. A series of such dieplates will be used interchangeably to correspond with blades of varying sizes and shapes. Referring to Figs. 5, 13, 14, and 15, the preferred means for clamping the blade upon said die-plate are as follows: At its frontend the die-holder52 is provided with the laterally-projecting hub 65, through which extends a squared hole to receive the stem 66 of a clamping-jaw 67, the acting face of which opposes the face of the die-plate and is slightly tapered to correspond with the taper of a knife-blade at the butt-end of the latter, at which point said jaw engages a blade placed on said plate. The stem 66 is made square for a short distance from the jaw, whereby it is prevented from turning within the hole in the die-holder, and is made round from such point to its outer end, where it is threaded to receive a nut 68 and a lock-nut 69. A collar 70 on said stem is formed with a shoulder end of said collar 70 forms a scroll-cam, (see Fig. 14,) and a lever 73 has its hub 74, which embraces the stem between said collar and the nut 68, provided with a similar cam for- Said die-plate IOO IIO
mation on its end adjacent to said hub, whereby the combined action of said cam-surfaces whenthe lever is moved about the stem as a center in one direction is to force the stem in a direction to carry the jaw 67 against the butt of a knife-blade laid against the die-plate and securely clamp it in such position. The collar 70 is provided with Spanner-holes, as shown, and by loosening screw 71 and imparting a partial rotation to said collar any wear between the two cam-surfaces can be taken up and the jaw can bev caused to securely hold blades of varying thickness upon the die-plate. The position occupied by a knife-blade when clamped upon the die-plate is indicated by broken lines in Figs. 7 and 19.
I also provide means for automatically causing the abrading-wheel to follow the beveled surface at the point of the blade to the extreme point of the latter, which are as follows: By reference to Figs. 8 and. 2l it will be ob served that the way 20, upon which the workcarriage 2l moves, is provided in its outer side and near its front end with a shallow recess 75, and that the carriage makes its contact with the way at that side by means of two screw-pins 76, which are locked in any posisition of adjustment by meansof lock-nuts 77. In its opposite side the carriage is provided with a series of holes in which are located coil-springs 7 8, surrounding pins 79, screwed into said holes, which springs bear against the adjacent side of the way 20, thereby drawing the ends of the pins 76 against the` opposite'side of the way with sufficient forceto cause one of said pins, when it reaches said recess 'Z5 as the. carriage approaches the end of its forward movement, to enter said recess and thereby impart to the carriage a slight tilting movement horizontally, such movement being allowed by the swivel connection of the nut 23with the carriage, as hereinbefore mentioned. The recess 75 is so located and is of such conformation that such tilting movement of the carriage will cause the beveled surface at the point of the knifeblade to bear against the face of the abrading-wheel tothe eXtreme point of the blade. As shown in said Figs. 8 and 2l, the recess 75,. instead of being made in the wall of the way itself, is madein a thin bar of steel S3,
' set into arrecess in the way and securedl in place by screws, such construction enabling said bar tof be hardened to increase its wearing quality and also enabling different bars with differentsizes and shapes of recesses to suit knife-blades of different sizes and shapes to; be used interchangeably. In Figs. 22 and 23 I have shown the recess 7 5 as being located in a block .76, which is dovetailed into the way, and in Figs. 24,25, and 26 Ihave shown it as being located in a short bar 7 7 ,movably inserted within a groove in the way, said bar having its end bent at a right angle to receive an adjusting-screw 78, by means of which said bar can be adjusted to vary the position of the recess to suit different styles and sizes of blades. In either of said forms the bar or plate containing the lrecess acts as a former to properly finish the blade at its pointed end.
A rotary pump 7 9 (see Figs. 3 and 4) is mounted at the rear side of the machine for withdrawing the water from the reservoir in the base and feeding it to the abrading-wheels through suitably-disposed pipes (not shown) in a well-known manner, said pump being driven by a belt 80, connecting a pulley 8l on the pump-shaft with a pulley 82 on shaft 33.
As hereinbefore stated, the mechanism above described for holding and presenting the work to the abrading-wheel at one end of the machine is duplicated at the opposite end in connection with the opposite wheel,thereby enabling two blades to be Operated upon simultaneously, and the operation of the machine is as follows: The work-carriages 2l being at the end of their traverse toward the front side of the machine, two knife-blades are applied to the die-plates thereon and clamped thereon by turning the levers 73. The operator then grasps the two levers 39 and moves them sufficiently to throw the gears 31 into engagement with gear 29, said levers being retained in such position bythe entrance of the pins 44 intothe recess in their under side. The carriages are thus caused to move toward the rear side of the machine, carrying the knife-blades transversely across the faces of the annular abrading-wheels, while at the same time the rocking motion imparted to the die-holders by the eccentrics 56 secure the desired convexity transversely to the blades. Such action continues until the tappets 42 on the. carriages engage the levers 43. and by rocking the latterwithdraw the pins 44 from the reversing-levers, whereupon the springs 47 actuate said levers to throw the gears 30 into engagement with gears 29 and the carriages begin their return movement. Such movement continues until the tappets 41 engage the levers 48 andactuate the reversinglevers to withdraw the gears 30 from gears 29 and the carriages come to a rest. The operator then removes the blades and transposes them upon the die-plates and the operationis repeated, the grinding being performed upon the opposite side of said blades. Asbefore described, the slight tilting movement given to the carriages just before they come to rest at the front side of the machine by the depressions 7 5 secure the desired bevel at the point of the blades. Such operation can go on indefinitely, the only changes in the machine required being the substitution of different die-plates for the varying sizes and styles of blades and the adjustment of the tables 16 and the plates 26, as before described, should such adjustment become necessaryto compensate for the wearing away of the face of the abrading-wheels. j
It will be apparent that the machine operating as thus described has a capacity IIO for very rapid work, as well as for grinding blades with entire uniformity upon bot-h sides thereof. l
It will be obvious that the novel means devised by me for holding and presenting the blade to the abrading-wheel can be used in the manner herein described in connection with a single abrading-wheel, instead of being duplicated for use with two wheels, without departure from the scope of my invention.
Having thus fully described myinvention, what I claim, and desire to secure by Letters Patent, is-
1. In a grinding-machine, the combination with an annular abrading-wheel, of a way eX- tending parallel with the acting face of said wheel'and having in one side thereof, near one of its ends, adepression or recess, a workcarriage mounted upon said way and having means for clamping thereon the work to be ground, said carriage being provided with inwardly-projecting engaging means near each end which bear against the recessed side of said way and with a spring or springs bearing against the opposite side of said way, and means, as a screwshaft, for moving said carriage upon said way, substantially as set forth.
2. In a grinding-machine,an annular grindin g-wheel, a work-carriage movable in a plane parallel with the acting face of said wheel, a work-holder pivotally supported upon said carriage, a screw-shaft operatively connected with said carriage for imparting a back-andforth movement thereto, means substantially as described for imparting a rocking movement to said work-holder during the traverse of said carriage, and means for causing a slight tilting movement to the carriage in a horizontal plane as it approaches the end of its movement in one direction, combined and operating substantially as and for the purpose set forth.
3. In a grinding-machine, the combination with an annular abrading-wheel 7, of the table 16 mounted upon way 15, carriage 21 mounted upon the way 2O on said table, screwshaft 22 supported in bearings upon said table, said shaft engaging a nut on said carriage and carrying the gear 24 at one end thereof, gears 25 29 mounted upon plate 27 adj ustably secured to the bed of the machine, and screw-rod 18 operatively engaging said table for adjusting the same upon said way 15, substantially as described.
4. In a grinding-machine, the combination with an abrading-wheel, as 7, of a work-carriage 21 carrying the adjustable tappets 41 42, reversing-lever 39 operatively connected to the driving-work of said carriage for reversing its movement, spring-actuated pin 44 adapted to enter a recess in said lever to retain it in one position, lever 43 operatively engaging said pin and having one arm thereof lying in the path of said tappet 42fon the carriage, lever 4S having one arm thereof in engagement with said lever 39 and its other arm lying in the path of said tappet 4l, and spring 47, arranged and operating substantially as set forth.
5. In a grinding-machine, the combination with an abrading-wheel, as 7, of the workcarriage 21, screw-shaft 22 for operating the same, work holder 52 pivotally supported upon said carriage, shaft 53 carrying the sliding eccentric 56, and an intermediate connection between said eccentric and said workholder whereby the latter receives a rocking movement from the former, substantially as and for the purpose described.
6. In a grinding-machine, the combination with the carriage 21 and its operating screwshaft 22, of shaft 53 having mounted thereon the sliding eccentric 56, work-holder 52 pivotally hung upon said carriage and provided with the laterally-extending arm composed of the members 57 58 united by the hinge-joint 59, said member 5S terminating in a fork which embraces said eccentric 56, and means, as the adj usting-screw 60, for adjusting one of said members upon the other to vary the rocking movement of said work-holder, substantially as set forth.
7. In a grinding-machine, the combination with the way 20 having in one side thereof the recess 75, of the work-carriage 2l provided with the pins 76 which bear against the recessed side of said way and with the springs 78 which bear against the opposite side of said way, substantially as and for the purpose set forth.
8. In a grinding-machine, the combination with the way 20 having secured to one side thereof a removable plate or bar,as 83, containing the recess 75, of the carriage 21 provided with the pins 76 and springs 78 as described, and the screw-shaft 22 engaging the swiveled nut 23 on said carriage, substantially as described.
9. In agrinding-machine, the combination with the shaft 5 carrying the wheels 7 and band-pulley 10, of the shaft 33 driven by intermediate band and gearing from said shaft 5 and carrying the splined sleeves 32 upon which are mounted the bevel-gears 30 3l, re-
IOO
versing-levers 39 for shifting said sleeves,
forth.
WILBUR C. LAMBERT.' Witnesses:
W. I'I. CHAPMAN, J. E. CHAPMAN.
US601443D Machine for grinding cutlery Expired - Lifetime US601443A (en)

Publications (1)

Publication Number Publication Date
US601443A true US601443A (en) 1898-03-29

Family

ID=2670080

Family Applications (1)

Application Number Title Priority Date Filing Date
US601443D Expired - Lifetime US601443A (en) Machine for grinding cutlery

Country Status (1)

Country Link
US (1) US601443A (en)

Similar Documents

Publication Publication Date Title
US614247A (en) And hugo goldsmith
US2414182A (en) Grinding machine
US601443A (en) Machine for grinding cutlery
US773612A (en) Saw-tooth sharpener.
US427477A (en) Machine for grinding pearl
US565644A (en) Grinding-machine
US438581A (en) Metal-grinding machine
US2401561A (en) Machine for grinding helical gears and other conjugate helicoidal members
US554797A (en) Machine for grinding handles of table-knives
US552717A (en) Form-turning machine
US531368A (en) Machine for concaving razors
US607306A (en) Twist-drill-grinding machine
US388966A (en) gosling
US917149A (en) Polishing-machine.
US407577A (en) Twist drills
US388900A (en) millett
US2018831A (en) Metal sawing and filing machine
US747756A (en) Cutlery-grinding or other machine.
US612240A (en) Machine for dressing and grinding metal
US377969A (en) Shaping-machine
US807193A (en) Grinding-machine.
US765267A (en) Machine for making cut glass.
US1219813A (en) Metal-working machine.
US179854A (en) Improvement in grinding-svjachines
US955206A (en) Grinding or polishing machine.